Not all products are legal for sale or use on pollution controlled vehicles. Check your local laws and the manufacturers information

There is no warranty on exhaust pipes and mufflers with regard to any discoloration. Discoloration (bluing) is the result of tuning characteristics, cam timing, carburetor jetting, overheating, etc., and is not caused by defective manufacturing. See the CHEMS/LUBES section for products that will help prevent or remove bluing.

Installation of a new exhaust system may change your motorcycles fuel-air mixture requirements. Please consult the exhaust manufacturer directly with questions regarding any modifications that may need to be made during, or after, installing their product. If a jet kit or fuel processor is recommended, see the FUEL/INTAKE section

The Air Resources Board (ARB) does not permit the use of aftermarket emission-related parts that alter the air/fuel ratio of an emission-controlled vehicle. Due to these legal restrictions this part cannot be shipped to California.

Specs for Thunderheader 2 into 1 High Performance Exhaust System - 1027

Color - Primary

Chrome

Finish

Chrome

Style

Tapered Tip

Type

2-Into-1 System

Units

Each

Weight

19.31 lbs

Specs for Thunderheader 2 into 1 High Performance Exhaust System - 1027

Color - Primary

Chrome

Finish

Chrome

Style

Tapered Tip

Type

2-Into-1 System

Units

Each

Weight

19.31 lbs

Fitment for Thunderheader 2 into 1 High Performance Exhaust System - 1027

The right sound, easy to install, 10HP, 20FtLbs Torque bolt-on. Get the shield kit or cook your leg.Yes it's a bit louder than VH duals. But a deeper, respectful, commanding duntDunt. Not the obnoxious blatBlat from the BigRadius 2-1.So I got a free Dynotune from a dealer, who dyno'd it the next week with only this $650 mod (with shields). From 94HP/104# torque to 104hp/124#torque.Provides the performance I needed from stock on my '09 FXDFSE. Dynotune is a must from stock-it turned my skoot to a monster.Buy 2 rear tires, cause they won't last.Comes with O2 ports, perfect fitment, mounting bracket and all you need minus the head port gasket (why not? -it's right there and $5 pair).25 mins to install, no fancy tools except a swivel socket extension. And ale-pale Ale.

I recently purchased a 2001 Dyna Low rider with 7000 miles from a great previous owner that did very little to the bike but maintain it. He did put a Mikuni carb on it. My plan was to do the bike up right and quick..two weeks...but tasteful. I added the intake and cleaner and quite a few other items to dress the bike up to my style. Most importantly I waited until last to do the exhaust, so I called Mikuni and talked to Steve...told him what I was doing and asked for his advice. Afterwards, given my style I was going for and the performance I was seeking, he offered the Thunderheader as a choice. He explained that since I lowered the bike and wanted performance, this was a good choice. I forgot to mention, this is my first bike, and I did all the work and upgrading myself. This pipe couldn't have fit better and easier. Awesome piece of equipment!

very good investment for the price. It is only loud when you really twist the wick. Really increased the torque curve.At 65 or above you will really feel the push all the way up to where you think you are going to take off.At 120 you still can feel the torque pushing you back.

BEST ANSWER:Pipes are not going to change your fuel management. Simply a way to exit exhaust gases from the engine. Some pipes will do it more efficiently than others. Thunder headers are my favorite because they work better than any pipe I have found. Dyno proven by myself. From drag pipes to 4 different brands, All were run back to back.the thunder header didn't produce the overall most H.P. BUT, provided the highest H.P. AND torque combined. Torgue being that ability too provide the push you feel at the initial movement of the bike. No other pipe came close..( that I tried) I hope this answered your question.

BEST ANSWER:Pipes are not going to change your fuel management. Simply a way to exit exhaust gases from the engine. Some pipes will do it more efficiently than others. Thunder headers are my favorite because they work better than any pipe I have found. Dyno proven by myself. From drag pipes to 4 different brands, All were run back to back.the thunder header didn't produce the overall most H.P. BUT, provided the highest H.P. AND torque combined. Torgue being that ability too provide the push you feel at the initial movement of the bike. No other pipe came close..( that I tried) I hope this answered your question.